I need to generate a number randomly which is either -1 or 1

Trying to generate either -1 or 1 randomly.

I have looked at;

R = unifrnd(-1,1)

however this generates a random number in the interval (-1,1) whereas I am trying to generate a random number which is either -1 or 1

Answer 1

[Image Analyst]

Try this:

r = 2 * randi(2) - 3

[MK96]

Tried it and it works

Thanks! :)